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Finding the Fourth Proportional to 25,992.62, 38,991.36 and 8,457.74

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Solution

The fourth proportional to 25,992.62, 38,991.36 and 8,457.74 is: 12,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,992.62 : 38,991.36 = 8,457.74 : x
  2. Step 2: Convert to fraction form
    25,992.62/38,991.36 = 8,457.74/x
  3. Step 3: Cross multiply
    25,992.62x = 38,991.36 × 8,457.74
  4. Step 4: Simplify right side
    25,992.62x = 329,778,785.13
  5. Step 5: Solve for x
    x = 329,778,785.13/25,992.62
  6. Step 6: Final answer
    x = 12,687.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.